The native mode spooler (NMS), MPE/iX version B.40.00 and later versions, is a complete replacement of spooling subsystems on previous MPE V/E and MPE XL systems. With MPE/iX version B.40.00 and beyond, SPOOK and SPOOK5 (MPE V/E) functions are replaced by the SPIFF utility. The SPOOK utility is still supported for all MPE V/E releases and for all MPE XL releases that contain it.
With MPE/iX version B.40.00, SPOOK functions are carried out with SPIFF commands and with CI commands, editor subsystems, the SPFXFER utility, the PRINTSPF utility, STORE, and RESTORE.
With the NMS, linked spool files are created as variable-length disk files and are kept in a special account named HPSPOOL. HPSPOOL handles spool files and spooler processes and contains two special groups named IN and OUT. Input spool files reside in the IN.HPSPOOL group and output spool files reside in the OUT.HPSPOOL group.
Unlinked output spool files are also disk files and can reside in any group and account.
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 | CAUTION: Nothing but NMS spool files should be in the IN and OUT groups of the HPSPOOL account. Do not purge the IN and OUT groups. Also, HPSPOOL contains checkpoint file groups. Do not tamper with these groups. |
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An input spool file is a private file (level 2 privileged file). The system creates an input spool file by the STREAM command or by a spooler process controlling a spooled input device.
An output spool file is either a private or nonprivate file that is linked or unlinked. The system creates linked output spool files by using HPFOPEN or FOPEN to open a spooled device. Unlinked output spool files can be created by using HPFOPEN or the BUILD command.
The FILE and BUILD commands have an option called SPOOL that specifies an output spool file not linked to the spool file directory (SPFDIR). This file does not print nor is it linked to the SPFDIR. When you issue the SPOOLF command with the PRINT option, a linked copy of the spool file is made. Refer to chapter 2 for an example.
See chapters 1 and 2 for more details about input, output, and private spool files.
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 | NOTE: If you use COPY or FCOPY to copy a spool file from the HPSPOOL account, the copy file is an unlinked spool file. |
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The COPY command of the SPIFF utility copies a linked spool file to a new linked spool file.
A separate spooler process manages each spooled device. A logical device number or a device name, which is an alphanumeric string of up to eight characters, defines a device. In addition, a device class defines a related set of devices. You may issue a single command for a device class, and it affects all devices that belong to that class.
